Switch-lock.



C. B. EARN.

SWITCH LOOK.

APPLICATION FILED DEC. 2, 1913.

Patented Apr. 7, 1914.

2 SHEETS-SHEET 1.

U. B. HARN.

SWITCH LOOK- APPLICATION FILED DEC. 2, 191a.

Patented Apr. 7,1914

2 SHEETS-SHEET 2.

a I L;

UNITED .STATES PATENT OFFICE.

CHARLES B. EARN,

' BROWNSVILLE, PEIEINSYLVANIA.

OF. SOUTH BROWNS VILLE, PENNSYLVAIIIA, -ASSIGNOR OF ONlEr THIRD TO ARTHUR D. PBINGLE AND ONE-THIRD T0 HERMAN W. TWEED, BOTH HF SWITCH-LOCK.

Specification of Letters Patent.

Patented'Apr. '7, 1914.

Application filed December 2, 1913. Serial in. 804,300.

To all whom it mag concern:

Be it known that I, CHARLES B. HARN, citizen of the United States, residing at South Brownsville, in the county of Fayette and State of Pennsylvania, have invented certain new and useful Improvements in Switch-Locks, of which the following is a specification, reference being had therein to the accompanying drawing.

This invention relates to switch locks-and has for} its object the production of a simple and efiicient lock for holding the switch in a set position ,after once having been thrown.

Another object of this invention is the production of a simple and eflicient means i for swinging the locking bar to an operative osition.

v A still further object of this invention is the production of a simple and eflicient means which will prevent the removal of the key from the operating lever or switch throwing lever while the same is in an unlocked position.

With the above and other objects in View this invent-ion consists of certain novel combinations, constructions, andarrangements of parts as will be hereinafter fully described and claimed.

In the accompanying drawings :Figure 1 is a side elevation of the locking lever or switch throwing lever showing the same in an unlocked position and applied to the switch throwing mechanism. Fig. 2 is a top plan view of the structure shown in Fig. 1, a portion of the switch throwing lever being shown in longitudinal section to illustrate the locking mechanism. Fig. 3 is an enlarged longitudinal sectional view through the lock carried by the switch throwing lever. Fig. 4 is a detail perspective partly in section of the casing which carries the locking mechanism for the switch throwing lever. Fig. 5 is a sectional view taken on line 2. Fig. 6 is a detail perspeclocking bar removed from the 7 is a detail perspective of the lock casing. Fig.

tive of one of the keepers within which the switch throwing lever is adapted to fit. Fig. 8is a side elevation of a portion of the lock case showing the closure plate adapted to normally close the key opening. Fig. 9 is a detail perspective of one end of the lock casing showing a modified form of the means for shifting the tumbler bars to 'operate the locking bars. Fig. 10 is a detail perspective of the plate carried within the lock casing adapted to constitute a guide for the key used for throwing the locking bolt to an unlocked. position. Fig. 11 is a longitudinal section through the plate and sleeve illus trated inFig. 10.

By referring to the drawings it will be seen that the switch throwing mechanism 1 is mounted upon a supporting plate 2 havlng its ends fitting uponthe upper face of a plurality of railroad ties which support the rails of a track. The plate 2 is provided with a downwardly bent portion 3 which supports the switch throwing mechanism, and a shaft 4 is carried by the switch throwing mechanism upon which is keyed the switch throwing lever 5.

A keeper 6 is placed to either side of the switch throwing lever 5 asillustrated in Fig. 1, and each keeper comprises a base portion 7 having parallel vertically extending plates which are formed integral with the base and are held in spaced relation to constitute a pocket for receiving the switch throwing lever 5 as is illustrated in Fig. 2. The inner faces of each of the plates of the keeper 6 are provided with notches 8, which notches are adapted. to receive the respective ends of thelocking bar 12 carried by the switch throwing lever 5. It will be seen that these keepers 6 will constitute an efiicient means for holding the switch throwing lever 5 in a set position after the same has once been swung.

The switch throwing lever 5 is provided with an elongated aperture 9 and within this aperture 9 is placed a lock casing 10 which lockcasing is provided with a flange portion 11 upon one side thereof for constituting an eflicientmeans for facilitating the securing of the lock casing 10 within the aperture 9. This lock casing 10 comprises a hollow bodyand within this hollow body is pivot-ally mounted a locking bar 12. This locking bar 12 is provided with a transversely extending shaft 13, which shaft 13 is journaled in the sides of the casing 10. This locking bar.12 is provided with square-(l end portions 14 which will fit in the notches 8 formed in the keeper 6, and thereby prevent theswinging of the Switch operating lever until the switch operating lever is unis illustrated in Figs. 2, 3 and 4, and the opposite end of.this tumbler bar 15 is connected to a cleat 16, which cleat 16 is fixedly secured to one of the side walls of the casing end of. the slidingtumbler'bar 18 and limit.

- means of an integral we 10. The cleat 16 is'provided at its opposite end to the point where the tumbler bar 15 is secured with a notch 17 through which the sliding tumbler rod 18 passes. The sliding tumbler rod 18 is connected to the tumbler rod 15 by means of a transversely extending link 19, and this slidable tumbler rod 18 is provided with a substantially. U-shape key receiving member 20 for the purpose of facilitating the sliding of the tumbler rod 18 within the casing 10 when a key is brought into engagement therewith and is turned; A stop shoulder 21 is formed within the cas-- ing .10 and is adapted to engage the forward the sliding movement thereof.

From the foregoingdescription it will be seen that as the sliding tumbler rod or bar 18 is moved longitudinally within the casing 10, the link 19 ,willbe drawn toward the cleat 16, thereby raising the outer end of the tumbler rod 15, which will pull the same to the posit-ion shown in dotted lines in Fig. 3

and in full lines'in Fig. 4 and cause the look-- ing bar 12 to be swung 'to the position shown in full lines in Fig. 4 and in dotted lines in Fig. 3. When, however, thesliding tumblerbar or rod 18 is moved toward the locking bar 12, the tumbler rod or .bar 15 will be drawn to the position shown infull lines in Fig. 3, and in this manner draw the respective ends of the locking bar 12 within the casing 10 as clearly illustrated in Fig. 3.

One side of the casing 10 is provided with a key receiving aperture or key-hole 22 for the purpose ofadmitting a key thereto, and it should be understood that any form or de-.

sign of key mayfbeused forthe purpose of employing a different. key for .difierent switches' A sliding plate- 23 is mounted upon the outer face of the casing 10 and is adapted to normally close the key-hole 22 to prevent the entrance of moisture into the lock and deteriorate the interior of the lock.

The plate 23 is provided with a plurality oflongitudinally extending apertures 24 which workiupon the rivetsor pins 25. A bead portion. 26 is formed upon the plate 23, and this bead portion presents a means for allowing the plate 23 to .be gripped in order that the same may be moved longitudinally upon the casing 10.

web of the key comes in engagement with A sleeve 30 is provided with'a split lower the notch 28. The web of the key will then engage the substantially U-shape key receiving portion of the tumbler rod 18 and the rod may-in this manner he moved longitudinally by'the rotation of the key. .After the key has been rotated, however, it will be im-' possible to withdraw the key from the 'casin returned to its normal position.

- As is illustrated in Fig. 9 there 'is shown g 10 until the tumbler bar or rod-18 has been videcl with the usuaLkeyreceiving pocket 20, and this pocket is adapted to receive a projecting finger 33 carried by the rotating drum 34. This drum 34 is placed within the casing '35, which casing 18 supported by portion 36 within the lock casing 10 as clearly illustrated in Fig. 9. A key receiving aperture 37 is formed in the drum 34 and of course this aperture may be formed of any desired design without departing from the spirit of the invention to receive any form of key which is desired. It should be understood, of course, that by rotating the drum. 34 the slidingtumbler rod or bar 18 may be op.- erated in the same manner as described and illustrated relative to Figs. 3 and 4.

seen that a very simple and efiici'ent device has been produced forthe purpose of locking a switch throwing lever in a set position and holding the same in such a locked position until some authorized person holding a key of the proper design may unlock the same.

Having thus described is claimed as new, is

From the foregoing description it will be i Q the invention what 1. A device of the class described compris ing a keeper, a lever, a lock casing carried thereby, a pivotally mounted locking member adapted to 'be swung transversely of-said lever,'sa-id keeper provided with means-for receiving the respective ends of said locking lever for holding said switch throwing lever in a locked position, and means forjoperaty ing said locking bar.

2. A device of the class described compris ing-a keeper, a switch throwing lever provided with a lock casing, a locking bar car- 1 inga keeper,

1 casing carried thereby,

-with apertures formed in the si said apertures, said 'carried within said casing be moved within said; casing for throwing.

ried by said casing, said casin a switch throwing lever, a locking casing carried thereby, a locking bar and adapted to the ends thereof out of said casing, a tumbler bar connected to said locking bar, a

bar, a link connecting said sliding tumbler tumbler bar and said sliding first mentioned tumbler bar for swinging said locking bar as sa1d tumbler bars are operated,'and means for facilitating the shifting of said sliding tumbler bar. P i

4. A device of the class described comprisa switch throwing bar, a look by sa1d casing, said locking bar being pivotall'y mounted within said casing, a pivote tumbler bar secured to, said casing, a cleat provided with a notched end, a sliding tumbler bar working through said notched end,- a link connecting said sliding tumbler bar with said pivoted tumbler bar, a sto for limiting the-sliding movement of sai sliding tumbler bar, a key' receiving pocket carried by'said sliding tumbler bar for facilitating the moving of said sliding tumbler bar within said casing, said pivoted tumbler bar connected to said locking bar for throwing the sameto an operative position, and

I said keeper provided with means for wwwing a switch operating lever,

a locking bar carried bar iwhereby said switch ing said locking a locked posithrowing bar will be held in tion.

5: A device of the class described comprising a switch throwing mechanism, an operat ing lever cooperating with said switch throwing mechanism, a plurality of keepers, a pivoted locking bar carried by said switch operating lever and adapted to engage said keepers for holding said switch operating lever in a set position, and means for swinging said lockingbar within said lever.

6. A device of the class described comprisa lock casing positioned within said lever, a locking bar pivotally mounted within said casing, a tumbler bar connected to said lever, a sliding tumbler bar, a link connecting said first mentionedv tumbler bar with said sliding bar, means; for limiting the movement of said tumbler bars, a key receiving socket formed upon said sliding tumbler bar, a key guiding sleeve carried within said casing and provided with a notched portion for admitting (1 a key into engagement with said key receiving socket, means formed upon sald plate for preventing the entire rotation of a key after the same has been inserted therein, said casing provided with a key rece v ng opening, and a sliding protector plate fitting over said opening for preventlng the entrance of moisture into said casing. In testimony whereof I hereunto aflix my signature in presence of two witnesses.

, CHARLES B. HARN. Witnesses:

HERMAN W.- Twnnn, ARTHUR D. PRINGLE. 

